WRITING
VALUE
INDEX
Every configuration parameter having preset settings is identified
on the display by an index and by a writing. To change the values
of a parameter, use keys
[key 1] and
[key 2]; to scroll
parameters, use
[key 4].
3
Chronothermostat configuration
Please note:
The configuration must be carried out by qualified personnel only.
The chronothermostat configuration allows you to customize the operation parameters of the device. To access the configuration program,
do the following:
1.
Press SET / PROG [key 6]. The operation mode being used will be temporarily stopped and will start
again automatically at the end of the programming process.
2.
Hold down the SUMMER / WINTER switchover key for about 5 seconds [key 7].
The L/N/NT4450 Chronothermostat device is fully compliant with the CEI EN 60730-1 standards and with its secondary parts.
BTicino S.p.A. reserves the right to change equipment or accessory specifications without prior notice.
To return to the initial page of the programming menu, press ENTER [key 5]; this will save the changes.
If no keys are pressed for 3 minutes, the chronothermostat exits the configuration program and returns to the previously used operation
mode without saving anything.
To eliminate the changes that have been made and reset the preset configuration parameters, press
[key 1] and
[key 2] at the same
time and hold them down for about 4 seconds.
Type of card connected
Index: 1
Writing:
COn
The chronothermostat can verify if the base is connected. Assuming that it is not, the lines will be displayed whereas if it is connected, rEL
will be displayed.
Temperature scale
Index: 2
Writing:
CELS o FHAr
Selects the scale, Celsius (centigrade) or Fahrenheit degrees, whereby all temperatures will be displayed. If the Fahrenheit scale is used,
temperatures may vary from 0.0 to 99.9
°
F.
Type of adjustment
Index: 3
Writing:
Std o ProP
Selects the temperature adjustment mode: with differential (Std) or proportional (ProP). This parameter is
used only for heating.
Thermal differential
Index: 3A
Writing:
DIFF
Sets the thermal differential value to be used when you choose the temperature adjustment mode with differential. When the differential is
suitably chosen, according to the heating system heat inertia, continuous switching ON and OFF will be avoided. It is recommended to use
the low thermal differential (LO) for heating systems with radiators and a high one (HI) for systems with Fan-Coil.
Adjustment band
Index: 3A
Writing:
bAnd
Select an appropriate value according to the temperature gradient of the system (broadband for high gradients – narrow
band for low gradients).
Adjustment period
Index: 3B
Writing:
PEr
Sets the duration of the adjustment cycle (ON OFF period) when you choose the proportional temperature adjustment mode. Select
5 minutes for low inertia systems (fan coil-type), 10 minutes for medium inertia systems (aluminium radiator type), 20 minutes for high inertia
systems (cast iron radiator type).
Configuration of the separate temperature probe
Index: 4
Writing:
SEct
It is possible to connect a separate temperature probe to the chronothermostat, whose operation is determined by this parameter.
•
Excluded probe (---):
the value of temperature detected by the probe is not used, even if connected.
•
Floor probe (FLO):
when the temperature detected by the probe reaches the value set in the parameter
Floor temperature Limit,
the
system turns off, regardless of the temperature detected by the chronothermostat.
•
Room probe (In):
the adjustment of the system is based on the value of the temperature detected by the separate probe. This temperature
is shown on the display instead of the one detected by the internal probe of the chronothermostat. The separate room probe is used when
the chronothermostat is necessarily located in a room which is different from the one you want to control the temperature of.
•
Outside probe (Out):
it does not affect the adjustment of the system and is simply used to get a second temperature, for example the
outside temperature.
Floor temperature limit
Index: 4A
Writing:
tFLO
Sets the temperature limit value read by the separate probe which turns off the system when the floor probe is used (for floor heating systems).
Optimization
Index: 6
Writing:
OPt
Calculates the advance switch-on needed to reach the temperature required at a specific time, considering the heat inertia of the system.
The optimization occurs only when it is switched on the first time of the day, in other words when initially programmed from one temperature
to a higher one.
Correction of room temperature
Index: 5
Writing:
Corr
Enables you to add/subtract an offset to/from a temperature value measured by the chronothermostat.
Maximum Duration of the optimization
Index: 6A
Writing:
OPtH
Sets the maximum duration, expressed in hours, of the preactivation calculated by the optimization.
Turns on the system for 1 minute a day (h 23.58), thus operating the water circulation pump so as to prevent it from seizing. This occurs
only if the system has never been switched on during the day.
Pump antigalling
Index: 7
Writing:
Pu
1 2 3 4 5 6
7
